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pcreux /
Last active Aug 9, 2020
Failsafe: degrade user experience and notify when something goes wrong.


When something goes wrong I want to degrade the user experience (instead of returning a 500 - Server Error) And I want to be notified about the failure


Wrap non mission critical code:

pcreux / circleci-trace
Created Nov 21, 2019
Generate a trace of your circleci workflows
View circleci-trace
#!/usr/local/env ruby
# Generate html traces from CircleCI workflows
require 'json'
require 'http'
OWNER = 'githubowner'
REPO = 'githubrepo'
pcreux / format_bundle_outdated.rb
Created May 31, 2019
Format 'bundle outdated' into a CSV file ordered by version delta
View format_bundle_outdated.rb
#!/usr/bin/env ruby
# Run `bundle outdated | format_bundle_outdated`
# to get a CSV file listing the columns below for all outdated gems.
COLUMNS = [ "name", "newest", "installed", "requested", "groups", "delta" ].join(",")
class Version <, :minor, :patch, :beta)
pcreux / 000 Oh no conditionals!.png
Last active Jun 6, 2018
Turning imperative conditionals into declarative rules
pcreux / Gemfile
Created Apr 19, 2018
Minimal setup to run a static site on Heroku.
View Gemfile
# no ruby gems required
pcreux / extract-migration
Created Oct 6, 2017
Extract all new migrations from the current branch over to a new branch (suffixed with "-migration")
View extract-migration
# Extract all new migrations from the current branch over to a new branch (suffixed with "-migration")
set -ev
export branch=`git rev-parse --abbrev-ref HEAD`
git checkout master
git pull
git checkout -b $branch-migration
git checkout $branch -- db engines/*/db
pcreux / rtt
Last active Nov 3, 2017
Run tests for all changed app, lib and test files
View rtt
#!/usr/bin/env ruby
# Run unit test for all added or changed app, lib and test files.
# Ex:
# * `rtt` will run tests for all files changed since the last commit
# * `rtt master` will run tests for all files different from master
if ARGV[0]
files = `git diff --name-only $(git merge-base HEAD #{ARGV[0]})..$(git rev-parse --abbrev-ref HEAD)`.split("\n")
files = `git status -s`.split("\n").map { |f| f.split(' ').last }
pcreux / mktest
Created Jun 14, 2017
Generate a test file. `mktest app/models/user.rb` => `test/models/user_test.rb`
View mktest
#!/usr/bin/env ruby
DESC = "
Generate test file
Example: mktest app/services/user/create.rb will generate test/services/user/create_test.rb
pcreux /
Last active May 14, 2018
Robust Rails Apps - VanRuby - March 29, 2017

Robust Rails Apps

Philippe Creux - @pcreux

#vanruby - March 29th, 2017

pcreux / 99bottles.rb
Last active Jan 16, 2020
99bottles in 15 minutes. Feeling a bit dizzy now... 🍻 `git clone --depth=1 --branch=exercise`
View 99bottles.rb
class Bottles
def verse(current)
#{bottles(current).capitalize} of beer on the wall, #{bottles(current)} of beer.
#{take_one_down(current)}, #{bottles((current - 1) % 100)} of beer on the wall.
def verses(start, finish)
(finish..start) { |number| verse(number) }.join("\n")
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